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Izidor Hafner
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Demonstrations 21  40 of 1143
Matching Symmetries of Friezes
Graphical Solution of a Quadratic Equation with Complex Coefficients
Basic OneStep Graphical Operations on Complex Numbers
Projecting a Polyhedron onto a Plane through Two Holes
Refraction in a Triangular Prism
33. Construct a Triangle Given Its Base, Altitude to the Base and Product of the Other Two Sides
A Construction of the Square Root of Seven
Geometric Construction of the Square Roots of a Complex Number
Refraction through a Ball
Refraction in a Biconvex Spherical Lens
3. Locus of the Solutions of a Complex Quadratic Equation
2. Locus of the Solutions of a Complex Quadratic Equation
1. Locus of the Solutions of a Complex Quadratic Equation
Generalized Cassini Curves
Matching Symmetries of Plane Figures
Constructing the Harmonic Mean 2
Constructing the Arithmetic, Geometric and Harmonic Means
Graphical Solution of a Quadratic Equation Using the Arithmetic and Geometric Mean
Graphical Solution of a Quadratic Equation Using a Result from Optics
Camera Obscura
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